1,About productHigh purity alumina has become one of the important special functional materials because of its excellent physical and chemical properties. Because of the true density, Mohs hardness, wear resistance, corrosion resistance, heat insulation, easy sintering, and good mechanical properties, etc., showing that the conventional materials with optical, electrical, magnetic, thermal and mechanical properties, is one of the tip materials production led sapphire substrate material, lithium battery protection membrane, integrated circuits on ceramic substrates, green lighting with an important basis for trichromatic fluorescent powder, automotive sensors, tape additive, catalyst, coating carrier, semiconductor and liquid crystal display, transparent high pressure sodium lamp, precision instrument and aero optical devices materials and in the production of new materials in the 21st century the largest and highest value, use the most widely.2,Compositions

High-purity Al2O3

Items

Compositions

GNAO-04

GNAO-045

GNAO-05

crystal form

α

α

α

Appearance

White crystal powder

Powdery

Particle size distribution, %

particle size( D10)<1.5um ≥

10

10

10

particle size( D50)<10um ≥

30

30

30

particle size( D90)<30um ≥

50

50

50

Apparent density, g/cm3

0.30~0.60

0.30~0.60

0.30~0.60

Tap density g/cm3

0.50~0.90

0.50~0.90

0.50~0.90

Specifi c surface area m2/g

4~8

4~8

4~8

Pie

Appearance

White cylindrical

Sintering density g/cm3

3.2

3.2

3.2

Massive

Appearance

White crystal material

Density g/cm3

3.5~3.8

3.5~3.8

3.5~3.8

Si

25

20

5

Content of impurities ( ×10-4), % ≤

Na

10

10

5

Mg

10

10

3

Cu

10

10

3

Fe

20

10

5

Ca

10

10

3

Cr

10

10

3

Pb

5

5

3

Zn

4

4

3

Ti

3

3

3

:

Note: Product size according to user requirements processing.

3,Authentication

4,About us Yangzhou ZTL New Material Co., Ltd. (hereinafter referred to as Zhongtianli, formerly known as Yangzhou Gaoneng New Materials Co., Ltd.) is a national high-tech enterprise specialized in the R&D, production and marketing of high-purity materials. The company completed the shareholding reform at the end of 2013 and renamed as Yangzhou Zhongtianli New Materials Co., Ltd. It was listed in China SME Share Transfer System on August 22, 2014, becoming the second SME listed in the "New Three Board" of Yangzhou city and the first of Hanjiang district.